Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Could I have seen Zubenelgenubi in morning twilight with x10 binoculars?
    From: David Pike
    Date: 2017 Dec 16, 00:42 -0800

    The last couple of mornings have been very clear.  The rear of my house gives good views to the east and south.  Yesterday morning, 15th December 2017, upon opening the curtains during morning twilight, I could see a sickle moon and a bright planet to it’s right.  When I checked on ‘Navigator’, I could see that the planet had to be Jupiter, and that Mars might also have been visible a bit further round to the right. 

    This morning, 16th December, I decided to get up slightly earlier to see if I could see both Mars and Jupiter.  Upon opening the curtains, the Moon was still sickle shaped, Jupiter was very bright, but it was already too light to see Mars.
    Therefore, I decided to take a closer look at Jupiter through a pair of poor quality x10 binoculars purchased for pennies from a junk shop. 
    To my surprise, I spotted another body, the same yellow colour as Jupiter, lower, and to its left.

    ‘Navigator’ predicts that the only body anywhere near this position was Zubenelgenubi (which all my fellow nav students in the 1960s wished to observe one day, simply because of its name).  However, its magnitude was +2.9.  My question is, could I possibly have seen a +2.9 magnitude star from the surface of the Earth well into morning twilight with x10 binoculars.  If so, it would be a first for me, and I can tick Zuben’ubi in my ‘I spy stars’ book.  DaveP   

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site